CN113083154A

CN113083154A - Granulation equipment capable of controlling particle size

Info

Publication number: CN113083154A
Application number: CN202110440219.3A
Authority: CN
Inventors: 叶波; 崔红标; 石建军; 李帅; 李德天; 胡开新; 鲍丙露
Original assignee: Institute of Environment Friendly Materials and Occupational Health of Anhui University of Sciece and Technology
Current assignee: Institute of Environment Friendly Materials and Occupational Health of Anhui University of Sciece and Technology
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-07-09

Abstract

The invention discloses a granulation device capable of controlling the particle size, which relates to the technical field of granulation devices and comprises a feed inlet, wherein four nozzles capable of adjusting the inlet and outlet of an adhesive are arranged below the feed inlet and enter an extrusion bin, a spiral extrusion rod is arranged inside the extrusion bin, and raw materials entering from the feed inlet can be processed into clusters through the operation of the extrusion bin. In the middle is a mould with controllable grain size, and the agglomerated particles are pressed into moulds with different pore sizes by adjusting a cover above the mould. And finally, a collection bin is provided with drying equipment, and the particles are dried and then concentrated in the collection bin. The invention provides a method for controlling the particle size of particles by a mode of not replacing a die, and the method has the advantages of simple and convenient adjustment mode, strong practicability and capability of better and faster completing granulation.

Description

Granulation equipment capable of controlling particle size

Technical Field

The invention relates to the technical field of granulation equipment, in particular to equipment capable of controlling particle size.

Background

In the field of soil heavy metal remediation, passivators like fly ash and biomass ash need to be added into soil, but the passivators cannot be directly added into the soil, so that the passivators need to be prepared into particles and added into the soil. The most of the existing granulation methods are divided into three types: wet granulation, dry granulation and spray granulation, wherein the wet granulation is most widely used, the wet granulation is a method for preparing granules by adding a binder into powder and aggregating the powder together through a bridge frame or a bonding effect of the binder, and the granules prepared by the wet granulation have round surfaces and have the advantages of good granule quality, attractive appearance, strong wear resistance, good compression molding and the like.

The existing wet granulating machine extrudes materials out of an inner ring die by strong acting force through the rotation of a compression roller arranged in the existing wet granulating machine to complete granulation. In the production process of the ring die particles, different requirements are met according to different types of granulation, components such as the ring die and the like need to be replaced to obtain particles with different diameters, but the ring die is complex in installation and disassembly process, more in required accessories, time-consuming and labor-consuming, has certain potential safety hazards, and is difficult to meet production requirements; the prior art obviously has inconvenience and defects in practical use, so that improvement on a ring die structure is needed, thereby improving the efficiency.

Disclosure of Invention

The invention aims to provide a granulating device with controllable particle size; the device controls the size of the extruded particle size by adjusting the die cover on the die, and has the advantages of simple and convenient operation, stronger practicability and higher granulation rate.

The invention adopts the following technical scheme for realizing the purpose:

the utility model provides a granulation equipment of steerable particle size includes the feed inlet, and the below of feed inlet is the nozzle of four adjustable adhesive business turn overs, gets into the extrusion storehouse, and the inside in extrusion storehouse is including spiral helicine stripper bar, has the nozzle of control adhesive business turn over on the upper portion in extrusion storehouse, through the work in extrusion storehouse, can handle into a group with the raw materials that gets into from the feed inlet. In the middle is a mould with controllable grain size, and the agglomerated particles are pressed into moulds with different pore sizes by adjusting a cover above the mould. A cutter is arranged below the die, particles are cut off and enter a collection bin, drying equipment is arranged in the collection bin, and the particles are dried and then concentrated in the collection bin.

Preferably, the granulating equipment with controllable particle size provided by the invention has the advantages that the raw materials enter from the feed inlet, are mixed in the extrusion bin, and are extruded into the die through the spiral extrusion rod in the extrusion bin.

Preferably, the granulating equipment capable of controlling the particle size is provided with four adjustable nozzles at the left side and the right side below the feeding hole, the binder to be added in the particle agglomeration enters the extrusion bin through the nozzles, the amount of the added binder is controlled through the adjustment of the nozzles, and the particle agglomeration rate is improved.

Preferably, the granulation equipment with controllable particle size provided by the invention has the advantages that the raw material particles added with the adhesive enter the extrusion bin, the particles are fully and rotatably mixed in the extrusion bin through the action of the spiral extrusion rod, and the particles are extruded into a subsequent die after being mixed and agglomerated.

Preferably, the granulating device with controllable particle size provided by the invention is provided with a die with controllable particle size in the middle, and the circular die is divided into three parts which respectively correspond to three different pore diameters and occupy one third of the area of the whole die.

Preferably, the granulation equipment capable of controlling the particle size is provided with a rotatable die cover on the upper part of the circular die, the whole die cover occupies two thirds of the area of the circular die, and the required pore size is exposed and the rest two pore sizes are covered by rotating the die cover to control the rotation of the die cover, so that the particle size of the extruded particles can be controlled to be the same.

Preferably, the granulation equipment with controllable particle size provided by the invention is characterized in that a rotatable cutter is arranged below the die, a motor is arranged in the middle of the cutter, and the rotating cutter cuts the granules after the granules are extruded.

Preferably, the last part of the granulating equipment with controllable particle size provided by the invention is a collecting bin, the granulating equipment is possibly wet due to the added binder, and the granulating equipment is collected in the bin after being dried by a drying device, so that a hot air dryer is arranged above the collecting bin, a control panel of the dryer is arranged above the discharge port, and the granules entering the collecting bin are dried by adjusting the control panel.

Compared with the prior art, the device has the advantages that the device solves the complex process of replacing the die, the aperture of the extruded particle size can be controlled only by adjusting the die cover, the required particle size can be selected, the operation of the dryer in the collecting bin can be controlled by an automatic control panel, the granulating process is simplified, the particle size can be controlled while the particles are agglomerated, the practicability is high, and the granulating efficiency is improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the mold of the present invention;

in the figure: 1. a feed inlet; 2. extruding the bin; 3. a screw extrusion stem; 4. a nozzle; 5. turning a handle; 6. a mold; 61. screening holes; 7. a cutter shaft; 8. a cutter; 9. a collection bin; 10. a hot air dryer; 11. a rotatable mold cover; 12. a discharge port; 13. a motor; 14. a dryer control panel; 15. a temperature sensor; 16. the screw extrusion rod drives the motor.

Detailed Description

The technical solution of the present invention will be more clearly and completely explained by the description of the preferred embodiments of the present invention with reference to the accompanying drawings.

As shown in figure 1, raw materials to be granulated enter an extrusion bin 2 from a feed inlet 1, four nozzles 4 are arranged below the feed inlet 1 on the wall of the bin, two nozzles are arranged on the left side and the right side respectively, adhesive to be added is mixed with the raw materials in a spray form through the arranged nozzles 4, and the mixture can be fully mixed by spraying, and then the mixture enters the extrusion bin 2 behind. The raw materials are agglomerated in the extrusion bin 2, and the spiral extrusion rod 3 in the middle of the extrusion bin 2 continuously rotates to continuously convey the front raw materials forwards. The extrusion process also has a mixing process, the agglomeration rate of the particles can be improved by controlling the adding amount of the adhesive, so that the raw materials are continuously mixed and rotated in the extrusion bin 2 to finally agglomerate, the spiral extrusion rod 3 is controlled by the action of the transmission motor 16 of the spiral extrusion rod, and the particles from the feeding hole 1 are extruded into the die 6 under the action of the spiral extrusion rod 3.

As shown in fig. 2, the circular mold 6 is divided into three parts, each part occupies one third of the area of the whole circular mold 6, the pore diameter of each part of the sieve pores 61 is the same, and the pore diameters of the sieve pores 61 of different parts are sequentially increased, so that the selectivity of the sieve pores can be ensured, and the requirement that particles with different particle diameters are extruded from the mold 6 can be met. The die 6 is provided with a rotatable die cover 11, the die cover 11 occupies two thirds of the whole circle, the side of the die cover 11 is provided with a rotating handle 5, the position of the die cover 11 can be controlled by adjusting the rotating handle 5, and therefore the required hole diameter of the sieve hole 61 exposed on the die 6 is controlled, and particles with the same hole diameter can be extruded.

A rotating shaft 7 is connected in the middle of the die 6, the rotating shaft 7 is connected with a lower cutter 8, a small motor 13 is arranged at the joint of the rotating shaft 7 and the cutter 8 and controls the rotation of the cutter 8, and after the particles are extruded from the die 6, the motor 13 controls the cutter 8 to cut off the particles.

The cut particles enter a collecting bin 9, a hot air dryer 10 is arranged in the collecting bin 9 because some adhesives are added in an extruding bin 2 before, the produced particles are wet, the particles need to be dried and collected, the hot air dryer 10 is connected with a corresponding motor, a temperature sensor 15 is also arranged in the collecting bin 9, the temperature in the collecting bin 9 is connected to a control panel 14 through the temperature sensor 15, a control panel 14 of the dryer is arranged above the outside of the collecting bin 9, the wind speed of the hot air dryer is displayed on the control panel 14, the internal temperature of the collecting bin 9 is adjusted, the wind speed of the hot air dryer 10 is adjusted through adjusting the control panel 14 to dry the particles in the collecting bin, and the humidity of the dried particles is reduced, so that they do not stick together and the particles collected in the collecting bin 9 are discharged from the discharge opening.

The above detailed description merely describes preferred embodiments of the present invention and does not limit the scope of the invention. Without departing from the spirit and scope of the present invention, it should be understood that various changes, substitutions and alterations can be made herein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. The scope of the invention is defined by the claims.

Claims

1. The utility model provides a granulation equipment of steerable particle size includes the feed inlet, and the below of feed inlet is the nozzle of four adjustable adhesive business turn overs, gets into the extrusion storehouse, and the inside in extrusion storehouse is including spiral helicine stripper bar, has the nozzle of control adhesive business turn over on the upper portion in extrusion storehouse, through the work in extrusion storehouse, can handle into a group with the raw materials that gets into from the feed inlet. In the middle is a mould with controllable grain size, and the agglomerated particles are pressed into moulds with different pore sizes by adjusting a cover above the mould. A cutter is arranged below the die, particles are cut off and enter a collection bin, drying equipment is arranged in the collection bin, and the particles are dried and then concentrated in the collection bin.

2. A granulation apparatus as defined in claim 1, wherein: the raw materials enter from the feed inlet, are mixed in the extrusion bin, and are extruded into the die through the spiral extrusion rod in the extrusion bin.

3. A granulation apparatus as defined in claim 1, wherein: four adjustable nozzles are arranged below the feed inlet, the binder to be added in particle agglomeration enters the extrusion bin through the nozzles, the amount of the added binder is controlled by adjusting the nozzles, and the particle agglomeration rate is improved.

4. A granulation apparatus as defined in claim 1, wherein: the raw material particles added with the adhesive enter an extrusion bin, the particles are fully mixed in the extrusion bin in a rotating way under the action of a spiral extrusion rod, and the particles are extruded into a rear die after being mixed and agglomerated.

5. A granulation apparatus as defined in claim 1, wherein: the circular mould is divided into three parts which respectively correspond to three different apertures and occupy one third of the area of the whole mould.

6. A granulation apparatus as defined in claim 1, wherein: set up a mould lid that can rotate on circular mould's upper portion, whole mould lid accounts for circular mould's two-thirds area, rotates the control mould lid through the rotation, exposes the aperture that needs, covers remaining two kinds of apertures, just so can control the particle size of the granule of extruding the same.

7. A granulation apparatus as defined in claim 1, wherein: a rotatable cutter is arranged below the die, a motor is arranged in the middle of the cutter, and the rotatable cutter cuts off the particles after the particles are extruded.

8. A granulation apparatus as defined in claim 1, wherein: the last part is a collection bin, the humidity of the particles discharged from the extrusion bin is higher, so that a hot air dryer is arranged above the collection bin, a control panel of the dryer is arranged above the discharge port, and the particles entering the collection bin are dried by adjusting the control panel.